Abstract
A numerical tool providing good potential results for squeal simulation is presented. First the available experimental tools are considered in order to explain the process for both squeal identification and component identification. Then the theoretical background of the above-mentioned simulation is described. It includes the substructuring process (by modal reduction), the friction model, the complex eigenvalues extraction and the substructure contributions calculation. An application is then presented. We focus on one squeal frequency only. We first show how the model was able (through parametric analysis) to exhibit an unstable mode of the assembled system at the same frequency than measured. We show also how the calculated substructure contributions match quite well with the experimental operating deflection shape. Design modifications are then investigated in both experimental and numerical field. One successful and one failed example are detailed.
Published Version
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